Abstract: According to one aspect, embodiments herein provide a power converter configured to monitor at least one of current and voltage at a bidirectional AC load terminal, determine, based on the monitoring, whether the power converter is receiving AC power from at least one Photo-Voltaic (PV) inverter or whether AC power is being drawn from the power converter by at least one load, determine whether an energy storage device coupled to the power converter is fully charged, and in response to a determination that the power converter is receiving power from the at least one PV inverter and a determination that the energy storage device is not fully charged, operate a power conversion unit in the power converter to convert the AC power received from the at least one PV inverter into DC power and provide the DC power to a bidirectional DC terminal to charge the energy storage device.

Abstract: According to one aspect, embodiments herein provide a power converter configured to monitor at least one of current and voltage at a bidirectional AC load terminal, determine, based on the monitoring, whether the power converter is receiving AC power from at least one Photo-Voltaic (PV) inverter or whether AC power is being drawn from the power converter by at least one load, determine whether an energy storage device coupled to the power converter is fully charged, and in response to a determination that the power converter is receiving power from the at least one PV inverter and a determination that the energy storage device is not fully charged, operate a power conversion unit in the power converter to convert the AC power received from the at least one PV inverter into DC power and provide the DC power to a bidirectional DC terminal to charge the energy storage device.

Abstract: A system having input terminals including line and neutral terminals for receiving AC power from a first AC source and having output terminals including output line and neutral terminals for receiving AC power from output terminals of a second AC source and for supplying AC power to a load, has a transfer switch configurable to connect the input terminals to the output terminals or to isolate the input terminals from the output terminals. When the transfer switch is configured to isolate the output terminals from the input terminals, the second AC source is caused to cease supplying power to the output terminals when after phase shifting the voltage produced by the second source the voltage at the input terminals is in-phase with that voltage.

Abstract: A system having input terminals including line and neutral terminals for receiving AC power from a first AC source and having output terminals including output line and neutral terminals for receiving AC power from output terminals of a second AC source and for supplying AC power to a load, has a transfer switch configurable to connect the input terminals to the output terminals or to isolate the input terminals from the output terminals. When the transfer switch is configured to isolate the output terminals from the input terminals, the second AC source is caused to cease supplying power to the output terminals when a first voltage signal and an input current signal indicate the voltage and the input current satisfy a first set of criteria.